Back to results
US 2003/0157720 A1Published application
Protein standard for estimating size and mass
AssigneeExpression Technologies Inc.
InventorChuan Li
Life of this patent
Estimating the term…
Abstract
The invention relates to a protein standard comprising a collection of at least three polypeptides of different size and mass. The polypeptides can be from natural or recombinant sources or both. The protein standard can be used for simultaneously estimating both the size and mass of another protein or other proteins.
Claims20
A protein standard comprising a collection of polypeptides wherein;
- (a) the protein standard contains at least three polypeptides of different size and of different mass;
- (b) the size of all of the polypeptides in kilo Dalton covers a range of at least separable by a given polyacrylamide gel electrophoresis;
- and
- (c) the masses of all of the proteins cover a range of at least detectable by a given detection assay.
1 more element
A method of preparing a protein standard comprising:
- (a) obtaining a few polypeptides with known sizes;
- (b) estimating the mass of each of the polypeptides;
- and
- (c) combining the polypeptides with different sizes and masses.
1 more element
Dependencies are inferred from the claim text.